Every fact below links to its source. Informational only. Ownership statements are limited to primary announcements and filings.
- Headquarters
- Los Angeles, California (city on the Texas board firm record)Source: tbpedownloads.s3-us-west-2.amazonaws.com/roster_firm.zip
- Founded
- 1946: George Psomas started a small surveying firm, per the firm's historySource: psomas.com/about/overview
- Ownership type
- Employee-owned (ESOP): the firm's culture page describes Psomas as an employee-owned companySource: psomas.com/about/culture
- Website
- psomas.comSource: psomas.com/about/overview
Legal name, DBA and former names
- Psomas (name on the Texas board record and Form 5500 ESOP plan record)Source: tbpedownloads.s3-us-west-2.amazonaws.com/roster_firm.zip
Identifiers (UEI, state registrations)
- Texas TBPELS firm no. 24715.Source: tbpedownloads.s3-us-west-2.amazonaws.com/roster_firm.zip
Offices
- Offices listed on the site include Auburn, Chico, Denver, Fresno, Glen Ellyn, Los Angeles, Novato, Pasadena, Riverside, Roseville, Sacramento and Salt Lake City (partial list read)Source: psomas.com/about/overview
Ownership type
- Employee-owned (ESOP): the firm's culture page describes Psomas as an employee-owned company.Source: psomas.com/about/culture
Services and markets
- Construction management, engineering, environmental, and survey and geospatial services across energy, land development, transportation and water markets.Source: psomas.com/about/overview
Leaders
- Steve Margaroni, CEO and President.Source: psomas.com/about/overview
Licences (board records)
- Texas TBPELS roster lists Psomas (firm no. 24715, type NS, expires 2028-01-31)Source: tbpedownloads.s3-us-west-2.amazonaws.com/roster_firm.zip
ESOP plan data (Form 5500)
- DOL Form 5500 plan year beginning 2024-01-01: PSOMAS EMPLOYEE STOCK OWNERSHIP PLAN (ACK_ID 20251013112905NAL0001124225001), 901 active participants and total plan assets of $85,439,008 at year end.Source: dol.gov/agencies/ebsa/about-ebsa/our-ac…
Public filings
- DOL Form 5500 filings, plan year beginning 2024-01-01, NAICS 541330: PSOMAS EMPLOYEE STOCK OWNERSHIP PLAN (ACK_ID 20251013112905NAL0001124225001, 901 active participants); THE PSOMAS RETIREMENT SAVINGS PLAN (ACK_ID 20251013114638NAL0000561395001, 774 active participants); PSOMAS GROUP HEALTH PLAN (ACK_ID 20251003180313NAL0001652609001, 790 active participants)Source: dol.gov/agencies/ebsa/about-ebsa/our-ac…
Rankings and awards
- Listed in the ENR 2026 Top 500 Design Firms.Source: enr.com/toplists/2026-top-500-design-fi…
Sources of record
Ownership tag: Employee-owned (ESOP). Profiles are informational, compiled from public sources linked above. Firms may request corrections. A listing is not an endorsement.
